netdev - [PATCH 2/3] [NET] uli526x: fix endianness issues in the setup frame

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Date:	Tue, 29 Apr 2008 19:53:18 +0400
From:	Anton Vorontsov <avorontsov@...mvista.com>
To:	Jeff Garzik <jgarzik@...ox.com>
Cc:	Kumar Gala <galak@...nel.crashing.org>, netdev@...r.kernel.org,
	linuxppc-dev@...abs.org
Subject: [PATCH 2/3] [NET] uli526x: fix endianness issues in the setup frame

This patch fixes uli526x driver's issues on a PowerPC boards: uli chip
is unable to receive the packets.

It appears that send_frame_filter prepares the setup frame in the
endianness unsafe manner. On a big endian machines we should shift
the address nibble by two bytes.

Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>
---
 drivers/net/tulip/uli526x.c |   30 ++++++++++++++++++------------
 1 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/drivers/net/tulip/uli526x.c b/drivers/net/tulip/uli526x.c
index 1f077ac..2511ca7 100644
--- a/drivers/net/tulip/uli526x.c
+++ b/drivers/net/tulip/uli526x.c
@@ -1368,6 +1368,12 @@ static void update_cr6(u32 cr6_data, unsigned long ioaddr)
  *	This setup frame initialize ULI526X address filter mode
  */
 
+#ifdef __BIG_ENDIAN
+#define FLT_SHIFT 16
+#else
+#define FLT_SHIFT 0
+#endif
+
 static void send_filter_frame(struct net_device *dev, int mc_cnt)
 {
 	struct uli526x_board_info *db = netdev_priv(dev);
@@ -1384,27 +1390,27 @@ static void send_filter_frame(struct net_device *dev, int mc_cnt)
 
 	/* Node address */
 	addrptr = (u16 *) dev->dev_addr;
-	*suptr++ = addrptr[0];
-	*suptr++ = addrptr[1];
-	*suptr++ = addrptr[2];
+	*suptr++ = addrptr[0] << FLT_SHIFT;
+	*suptr++ = addrptr[1] << FLT_SHIFT;
+	*suptr++ = addrptr[2] << FLT_SHIFT;
 
 	/* broadcast address */
-	*suptr++ = 0xffff;
-	*suptr++ = 0xffff;
-	*suptr++ = 0xffff;
+	*suptr++ = 0xffff << FLT_SHIFT;
+	*suptr++ = 0xffff << FLT_SHIFT;
+	*suptr++ = 0xffff << FLT_SHIFT;
 
 	/* fit the multicast address */
 	for (mcptr = dev->mc_list, i = 0; i < mc_cnt; i++, mcptr = mcptr->next) {
 		addrptr = (u16 *) mcptr->dmi_addr;
-		*suptr++ = addrptr[0];
-		*suptr++ = addrptr[1];
-		*suptr++ = addrptr[2];
+		*suptr++ = addrptr[0] << FLT_SHIFT;
+		*suptr++ = addrptr[1] << FLT_SHIFT;
+		*suptr++ = addrptr[2] << FLT_SHIFT;
 	}
 
 	for (; i<14; i++) {
-		*suptr++ = 0xffff;
-		*suptr++ = 0xffff;
-		*suptr++ = 0xffff;
+		*suptr++ = 0xffff << FLT_SHIFT;
+		*suptr++ = 0xffff << FLT_SHIFT;
+		*suptr++ = 0xffff << FLT_SHIFT;
 	}
 
 	/* prepare the setup frame */
-- 
1.5.5.1

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